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American Journal of Pathology, Vol 143, 355-367, Copyright © 1993 by American Society for Investigative Pathology

REGULAR ARTICLES

Characterization and functional analysis of the expression of intercellular adhesion molecule-1 in human papillomavirus-related disease of cervical keratinocytes

N Coleman, IM Greenfield, J Hare, H Kruger-Gray, BM Chain and MA Stanley
Department of Pathology, University of Cambridge, United Kingdom.

We have investigated the expression of intercellular adhesion molecule- 1 (ICAM-1) in squamous neoplasia of the cervix and have noted a significant induction of the molecule in high-grade intra-epithelial lesions. Using monolayer and organotypic in vitro tissue culture systems, we have shown that there is no constitutive ICAM-1 expression on cervical keratinocytes immortalized but not transformed by human papillomavirus type 16, whereas two human papillomaviruses type 16 containing and fully transformed cervical keratinocyte lines do constitutively express the molecule. All cell types, including human papillomavirus-negative normal cervical keratinocytes, can be induced to up-regulate their expression of ICAM-1 by pro-inflammatory cytokines such as interferon-gamma. In addition, we have used an in vitro adhesion assay to show that ICAM-1:lymphocyte function antigen-1 interaction is functionally important in lymphocyte binding to cervical keratinocytes, suggesting a role for ICAM-1 in retaining and enabling functional activity of lymphocytes in the cervix in intraepithelial neoplasia.

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